FORM BHAC20
12-09-14 Rev. 3
PROCESS SAFETY MANAGEMENT INQUIRY
RE-EVALUATION OF HAZARDOUS AREA CLASSIFICATION REQUEST
FORM
Company Name
Project Sponsor
Project Name
Project Manager
Requested By
Project Number
Best Contact Number
Best Contact Email
Date
Bath Project No:
PROJECT DESCRIPTION:
dsfsdf
H.A.C. Assessment Due Date:
Information required for Re-evaluation of Hazardous Area Classification (HAC) from client:
1) Scaled plot plans: These drawings should reflect the as-built status of the equipment location. The drawings
are used as the base map for the Hazardous Area Classification drawings.
2) Current Process Flow Diagrams: Drawings should show stream numbers and process information such as
flow rates, pressures, and temperatures. The stream numbers should correlate directly with the material
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FORM BHAC20
12-09-14 Rev. 3
balance stream numbers. (If possible the material balance information needs to be in a MS Excel electronic
file).
3) Heat and Material Balance: Information should include all pure components for each stream in weight
percent (if possible). These streams need to be related by stream number to the PFD’s. (This data is used by
Bath to create each stream that is used in gas/vapor dispersion modeling).
4) Current Process & Instrumentation Diagrams (P&ID’s): These documents define equipment numbers,
names, and set the scope for the project.
5) Material Safety Data Sheets (MSDS): Each MSDS should be assigned to the appropriate process stream or
process equipment.
Deliverables from Bath Engineering to Client:
1) Area Classification drawings which include but are not limited to:
a)
Plan Drawings referenced to the scaled plot plan background/base map provided.
b) Enlarged Plan Drawings (used where the area is congested with process equipment). Drawing is
referenced back to the master background/base map plan drawings.
c)
Elevation Drawings (when there is a multi-level process structure with different process equipment at
each level). Plan drawings are also included for each structural level.
d) Drawings that contain equipment details, tables, notes, and legends
2) Hazardous Area Classification Assessment Report: A detailed audit proof document covering the
assessment having the following sections:
Section A
General Considerations
Section B
Identification of Point Sources of Emissions
Section C
Physical Properties of Materials Being Handled, Processed, or Stored
Section D
Classification Rational
Section E
Special Exceptions
Section F
List of Area Classification Drawings
Section G
Stream MESG Calculations
Section H
Gas Dispersion Modeling Graphs and Plots
3) Compliance Assessment Report: Documentation of general & specific findings.
4) The final documentation will be presented to client based on client requirements.
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FORM BHAC20
I.
12-09-14 Rev. 3
Project Information Required To Prepare an Estimate of Cost to Complete Re-Evaluation Of
Hazardous Area Classification
Available
Yes
No
N/A
Qty.
Notes
1. Current/Updated
Scaled Plot Plans?
1a. Is a field
verification of
current/updated
scaled plot plans
required?
2. Current Process
Flow Diagrams?
3. Heat and Material
Balance Information?
3a. In MS Excel?
4. Current Process &
Instrumentation
Diagrams (P&ID’s)?
5. Material Safety
Data Sheets?
6. Other: (i.e.
Isometric drawings,
pump spec sheets,
etc.)
II.
PLEASE EMAIL ABOVE INFORMATION IN PDF FORMAT TO PSM@BATHGROUP.COM. THIS
INFORMATION IS REQUIRED IN ORDER FOR BATH TO COMPLETE A COST ESTIMATE.
TERMS FOR THIS CHANGE AUTHORIZATION
Based on the information above, Bath Process Safety Management will estimate the number of hours and cost for
professional services required. A written proposal complete with specific terms and conditions will be provided.
Approved by:
For Client
Date
For Bath
Process Safety
Management
Date
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